期刊
PHYSICAL REVIEW B
卷 85, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.060201
关键词
-
资金
- US National Science Foundation, Division of Materials Research [NSF-DMR-0904188, NSF-DMR-0907325]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0907325, 0904188] Funding Source: National Science Foundation
Supercooled metallic liquids exhibit very different temperature (T) dependence of the excess specific heat (Delta C-p) and viscosity, profoundly influencing their glass-forming ability. Using two model glass-forming liquids in molecular dynamics simulation, here we demonstrate that their contrasting Delta C-p and relaxation/viscosity behavior has an underlying origin in their different T-dependent local structural ordering. Upon undercooling toward glass transition, a particularly stabilizing type of short-range ordering that accelerates with decreasing T leads to a steeply rising Delta C-p and higher fragility, whereas local motifs that merely respond to the densification of the liquids result in a weak T dependence of Delta C-p
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据